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f70e2e0619
Do preallocation for __key_link() so that the various callers in request_key.c can deal with any errors from this source before attempting to construct a key. This allows them to assume that the actual linkage step is guaranteed to be successful. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>